Question: To celebrate the first day of school, Kendra brought in a tray of caramel brownies and walnut brownies. She brought 36 caramel brownies and 24 walnut brownies. What percentage of the brownies were caramel?
Write your answer using a percent sign (%).
(1) 60%
(2) 61%
(3) 62%
(4) 60.5%
Solution:
Find the total number of brownies.
36 + 24 = 60
The part is 36.
The whole is 60.
Let n represent the percent.
Write a proportion to solve for n.
36/60 = n/100
36*100 = 60n
3600 = 60n
3600/60 = 60n / 60
60 = n
60% of the brownies were caramel.
You could also find the answer by writing and solving an equation:
part = percentage of whole
36 = n/100*60
36 = 60n/100
36 = 0.6n
36/0.6 = 0.6n/0.6
60 = n
60% of the brownies were caramel.
Then the option is (1) 60%
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